He is running____the wind towards the station_____Tom running ________the right.
_____________he referred to in his article was unknown to the readers.
______________breaks the law should be punished.
The government has to close those small factories to prevent the water of the river ______.
—Will you go swimming with me this weekend? —______.
21.Bob got seriously injured in the traffic accident, but luckily, the doctor came __________to save his life.